Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1997-01-22
1998-11-10
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
210490, 21050023, 21050027, 264 41, 264216, 427244, 427245, 4283155, 4283157, B32B 514, B01D 3914
Patent
active
058341072
ABSTRACT:
The present invention relates to the field synthetic polymeric membrane materials formed from casting polyvinylidene difluoride (PVDF) polymer solutions and/or dispersions. Membranes formed in accordance with the present invention are all highly porous. Both internally isotropic membranes and highly asymmetric PVDF membranes are disclosed. The membranes of the invention are useful in a variety of microfiltration and ultrathin applications.
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Ditter Jerome F.
Wang I-fan
Zepf Robert
Bell James J.
Copenheaver Blaine R.
USF Filtration and Separations Group Inc.
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